168641761312 has 24 divisors (see below), whose sum is σ = 332918159616. Its totient is φ = 84091117632.

The previous prime is 168641761297. The next prime is 168641761381. The reversal of 168641761312 is 213167146861.

It is a super-2 number, since 2×168641761312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7168168 + ... + 7191655.

It is an arithmetic number, because the mean of its divisors is an integer number (13871589984).

Almost surely, 2^168641761312 is an apocalyptic number.

It is an amenable number.

168641761312 is a deficient number, since it is larger than the sum of its proper divisors (164276398304).

168641761312 is a wasteful number, since it uses less digits than its factorization.

168641761312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14360200 (or 14360192 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The spelling of 168641761312 in words is "one hundred sixty-eight billion, six hundred forty-one million, seven hundred sixty-one thousand, three hundred twelve".